Refueling in V8 Supercars

Always racing, Always flyingPremium

Hey guys, I am slightly confused by the fuel rules and minimum fuel drop regulation that is present in some races in the V8 Supercar championship. For example for the clipsal 500, it says that a minimum of 140L of fuel drop. Does this mean that Starting Fuel + Pit 1 +Pit 2 = 140L of fuel? Or is it a different way that is used to calculate it?